Improvement in lamp-extinguishers



P. R'HIND. I

Lamp-Extinguisher. No. 210,878. Patented Dec. 17, 1878.

N Pains. PHDYC-LITHDGRAPHEH. WASHINGTON a c UNITED STATES PAT FRANKRHIND, OF BROOKLYN, NEW YORK.

IMPROVEMENT IN LAMP-EXTENGUISHERS.

Specification forming part of Letters Patent No. 210,878, dated December17, 1878 application filed November 18, 1878.

To all whom it may concern: I Be it known that I, FRANK RHIND, oiBrooklyn, in the county of Kings and State of New -York, have inventedcertain new and useful Improvements in Lamps; and I do hereby declarethe following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itpertains to make and use it, reference being bad to theaccompanyingdrawings, which form part of this specification.

My invention relates to an improvement in self-extinguishinglamps; anditconsists in combining with the lamp asleeve which moves up and downupon the standard of the lamp, and a bellows or other air forcing orsucking device, by means of which the flame may be extinguished by adraft of air when the lamp is either accidentallyupset or falls from thehand, as will be more fully described hereinafter.

Figure l is a vertical section of my invention. Fig. 2 is an enlargeddetail of the same. Fig. 3 is a vertical section of the base, showingthe bellows closed by the downward movement of the sleeve.

A represents the base of the lamp; B, the standard; 0, the movablesleeve, and D the bowl of the lamp. The standard is secured by means ofscrews, or any other suitable device, to the socket G on the bottom ofthe bowl, and is here formed of a hollow pipe, which passes down throughthe crossbar E of the base, and is fastened thereto by'means of a nutabove and below it. The lower end of this standard projects down intothe bellows F, and is secured permanently to the bottom thereof.

In order to prevent any leakage of air from the bellows, the top part ofthe bellows is made to move air-tight upon the standard by means of anysuitable packing.

The upper part of the bellows is secured permanently to the inside ofthe lower end of the sleeve, which projects down through the base, so asto rest upon the table or other support for the lamp, and which hereforms a protec tion for the bellows.

Through the lower end of the standard is made an opening, I, for the airto pass from the bellows when it is compressed by the downward movementof the collar, so as to force a ception oi the lower end of the burner,so as to form a chamber all around the inside of the collar, and intowhich the air is first forced from the bellowsor other ai r-forcin gdevice that may be employed in connection with the standard. The burnerP, which may be of any suitable construction, has either the malethreadformed considerablylonger than is usual or has a much longer neck,so as to project down to the female thread, as shown. In either case thetop of the extension upon the collar and the under side of the burnerand the joint formed by the union of the two threads should be madesufli ciently tight, so that there will be no leakage of air throughthem.

Through the side of the burner, and extending up along the wick-tube,above or to its top, is made a tube, 0, which serves to convey the airfrom the air-forcing device directly up to the flame.

1t will readily be seen that, should the lamp he accidentally upset ordropped from thehand, the bellows will be instantly compressed and acurrent of air forced through the hollow standard, through the tube inthe bowl of the lamp, and through the tubes above the bowl, so as toinstantly extinguish the flame.

As there is an air-chamber formed above or in the collar of the lampwhich extends entirely around, it is immaterial where the hole throughthe side of the burner stops, for the air, bein g forced into thechamber, instantly escapes up through the side of the burner andextingnishes the flame.

Although a bellows is here shown for the purpose of forcing a draft ofair up through the standard, it is evident that a cylinder and pistonmay be substituted for them and used with equal facility; or, ifdesired, instead of an air-forcin g device, the air may be suddenlysucked downward through the top of the cone and around the flame, so asto extinguish it in as quick and efficient a manner as if forced up frombelow.

Although the present form of devices shown embody the spirit of myinvention, yet many other forms may be substituted for them withoutdeparting from the principle, which is to extinguish the flame by meansof a draft of air, whether forced upward from below or sucked in fromabove.

If the sleeve is made heavy enough to operate the bellows by itself, nospring is necessary; but if the sleeve is light, the coiled spring. Xshould be used, so as to make the sleeve move quickly.

Instead of the tube passing I through the bowl of the lamp, it may bepassed up around the outside, if so preferred.

Having thus, described my invention, I claim- 1. The combination of alamp, an air-forcin g mechanism, and a movable sleeve, substantially asshown.

2. The combination of a lamp, a fixed standard, a movable sleeve, and anair forcing mechanism, substantially as described.

3. The combination of a movable sleeve, having the upper part of thebellows or other airforcing mechanism secured to it, with the holl owstandard, having the lower part of the airforcing mechanism secured toit, the said mechanism being operated by the movement of the sleeve,substantially as set forth.

4. A lamp-collar having an air-chamber formed in its upper part,substantially as specified.

5. A lamp-collar having a female thread for the reception of the malethread of the burner and an air-chamber formed above said thread andconnected with an air-forein g mechanism, substantially as shown.

6. Alamp-burnerhaving an opening through its side to connect with anair-chamber in the collar, and a tube to extend up to or near the flame,substantially as described.

7. The combination of the base A, standard B, movable sleeve 0, bowl D,bellows F, a tube through the bowl of the lamp, an air-ch amber in thecollar, and a tube in the burner for conveying the air to the flame,substantially as set forth.

In testimony that I claim the foregoing I have hereunto set my hand this11th day of November, 1878.

FRANK RHIND.

Witnesses:

JOHN L. LINDSAY, DAVID E. TYRRELL.

